IMT will soon be upgrading Confluence to version 6.3.4.
The upgrade is scheduled for 28th September, 8.00pm AEST, with Confluence unavailable until 6.00am AEST on 29th September.
To read about the new features, you can follow this link.
If you have any questions, please email atlassiansupport@csiro.au or contact the CSIRO IMT Service Desk.